|
| Commodity | 2005 | 2006 | 2007 |
| Roller chain of iron/steel | | | $4,000 |
| Articulated link chain other than roller chain, of iron/steel | $7,820 | $2,077 | |
| Parts of articulated link chain of iron/steel | | | $10,037 |
| Skid chain of iron/steel | | $1,211 | |
| Welded link chain of iron/steel | $24,851 | | |
| Chain, of iron/steel, n.e.s. in 73.15 | $345 | $528 | |
| Parts of chains (excl. articulated link chain), of iron/steel | $42 | | |
| Total | $33,058 | $3,816 | $14,037 |
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